How can PHP error handling be improved to catch undefined variables like in the provided code snippet?

The issue of catching undefined variables in PHP error handling can be solved by using the `isset()` function to check if a variable is set before trying to access its value. This helps prevent PHP notices or warnings when accessing variables that have not been defined. By checking if a variable is set before using it, you can avoid potential issues related to undefined variables. 

// Check if the variable is set before using it
if(isset($variable)) {
    // Use the variable if it is set
    echo $variable;
} else {
    // Handle the case where the variable is not defined
    echo "Variable is not defined";
}

Keywords

PHP error handling undefined variables error reporting debugging

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